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87 FC 35 Generator?????? - Printable Version

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87 FC 35 Generator?????? - bob_maloney@... - 09-11-2009 07:38

I have a 87 FC 35 and the generator will not start from any starting console.
The generator is an Onan 8.0 diesel I took the starter off and had it checked,
checked out great. I put the starter back on and it still will not start. I
then short the solenoid wire to the battery and it would start if was getting
the signal from the console. I have since taken apart the console on the
generator itself to find the Ford style starter solenoid inside and checked it
out and it works fine. The ground side of the solenoid at this point seems to
be getting the wrong signal as it should be grounding and in fact has 12 volts
to it. The switch side of the solenoid at this point has a little over 8 volts
when the starter switch is activated. The generator attempts to start as it
should operating the fuel shutoff and finally for lack of a better word times
out and either trips the DC output control or the push to reset circuit breaker.
From this can someone either tell me what to look for or if at all possible
supply me with a schematic. Any help is greatly appreciated.
Thanks in advance,
Bob Maloney
Clay City KY


87 FC 35 Generator?????? - birdshill123 - 09-11-2009 14:06

Bob:

We have an 88 FC with the same Gennie. I dont know if this will help but these
Onan's are famous for having bad connections from the electrical box on top of
the unit to the wire connectors. The wiring is tight on top and with the
vibrations problems occur. Sometimes just grabbing the large wire bundle and a
litle wiggle and all is good.

Bruce

1988FC


87 FC 35 Generator?????? - richardgideon - 09-11-2009 23:40

Bob, disconnect the white 7 pin connector on the backside of the DC control box
near top (the left control box on the DKD Onan).

Clean the pins and use a magnifying glass and check for burnt pins or bent and
misaligned pins. If necessary 'jump around' the burnt pin using the correct
guage wire and a butt connector or one of your choice. Put dielectric grease on
the connector and reassemble and ensure the connector snaps in place (may even
try a little super glue to keep connector from jiggling loose.

Dick Gideon
1989 FC35
ONAN DKD
Rolla, MO
573.465.0527

--- In WanderlodgeForum@yahoogroups.com, "bob_maloney@..."
wrote:
>
> I have a 87 FC 35 and the generator will not start from any starting console.
The generator is an Onan 8.0 diesel I took the starter off and had it checked,
checked out great. I put the starter back on and it still will not start. I
then short the solenoid wire to the battery and it would start if was getting
the signal from the console. I have since taken apart the console on the
generator itself to find the Ford style starter solenoid inside and checked it
out and it works fine. The ground side of the solenoid at this point seems to
be getting the wrong signal as it should be grounding and in fact has 12 volts
to it. The switch side of the solenoid at this point has a little over 8 volts
when the starter switch is activated. The generator attempts to start as it
should operating the fuel shutoff and finally for lack of a better word times
out and either trips the DC output control or the push to reset circuit breaker.
From this can someone either tell me what to look for or if at all possible
supply me with a schematic. Any help is greatly appreciated.
> Thanks in advance,
> Bob Maloney
> Clay City KY
>


87 FC 35 Generator?????? - timvasqz - 09-12-2009 13:05

Could it be that a relay is not wired correctly?? sounds like you have a handel on what needs to be done. the remote starts trigger a relay that triggers the solenoids on my 94

here is a link to an article on Bosch relays and if you scroll down there is a diagream of the varions configurations necessary

Bosch Relay

Greg of Tim&Greg
94ptCampPendletonCa


--- In WanderlodgeForum@yahoogroups.com, "bob_maloney@..." wrote:
>
> I have a 87 FC 35 and the generator will not start from any starting console. The generator is an Onan 8.0 diesel I took the starter off and had it checked, checked out great. I put the starter back on and it still will not start. I then short the solenoid wire to the battery and it would start if was getting the signal from the console. I have since taken apart the console on the generator itself to find the Ford style starter solenoid inside and checked it out and it works fine. The ground side of the solenoid at this point seems to be getting the wrong signal as it should be grounding and in fact has 12 volts to it. The switch side of the solenoid at this point has a little over 8 volts when the starter switch is activated. The generator attempts to start as it should operating the fuel shutoff and finally for lack of a better word times out and either trips the DC output control or the push to reset circuit breaker. From this can someone either tell me what to look for or if at all possible supply me with a schematic. Any help is greatly appreciated.
> Thanks in advance,
> Bob Maloney
> Clay City KY
>


87 FC 35 Generator?????? - wl89spman - 09-13-2009 17:14

--- In WanderlodgeForum@yahoogroups.com, "bob_maloney@..."
wrote:
>
Bob.. I have a 89 8.0 Kabota/Onan that was hard to start(would crank but not
fire. After a couple of years of constant problems with it I took it to a Onan
service center in Fort Worth.
They found two bad connections in one of the cannon plugs from the control
box(the 12v to heater of glow plugs). They buypassed the cannon plug with two
wires with quick disconnects. Cost $300 but starts perfect now. I also ordered
operator and service and parts manuals from them. I could post the phone number
if you like.

Hope that helps
Ed Gardels 89SP
Arlington Tx. 6in rain last 36 hours


> I have a 87 FC 35 and the generator will not start from any starting console.
The generator is an Onan 8.0 diesel I took the starter off and had it checked,
checked out great. I put the starter back on and it still will not start. I
then short the solenoid wire to the battery and it would start if was getting
the signal from the console. I have since taken apart the console on the
generator itself to find the Ford style starter solenoid inside and checked it
out and it works fine. The ground side of the solenoid at this point seems to
be getting the wrong signal as it should be grounding and in fact has 12 volts
to it. The switch side of the solenoid at this point has a little over 8 volts
when the starter switch is activated. The generator attempts to start as it
should operating the fuel shutoff and finally for lack of a better word times
out and either trips the DC output control or the push to reset circuit breaker.
From this can someone either tell me what to look for or if at all possible
supply me with a schematic. Any help is greatly appreciated.
> Thanks in advance,
> Bob Maloney
> Clay City KY
>


87 FC 35 Generator?????? - sc310c - 09-14-2009 07:28

STILL FIGHTING WITH THIS XXXXXXXXX CHECKED THE CONNECTIONS REALLY NEED
SCHEMATIC OF CONTROL BOX. IF ANYONE HAS OR KNOWS WHERE TO BUY ONE OR A COPY
WOULD BE GREAT
TKS BOB MALONEY IN KY


87 FC 35 Generator?????? - sc310c - 09-14-2009 21:50

--- In WanderlodgeForum@yahoogroups.com, "wl89spman" wrote:
>
> --- In WanderlodgeForum@yahoogroups.com, "bob_maloney@" wrote:
> >
> Bob.. I have a 89 8.0 Kabota/Onan that was hard to start(would crank but not
fire. After a couple of years of constant problems with it I took it to a Onan
service center in Fort Worth.
> They found two bad connections in one of the cannon plugs from the control
box(the 12v to heater of glow plugs). They buypassed the cannon plug with two
wires with quick disconnects. Cost $300 but starts perfect now. I also ordered
operator and service and parts manuals from them. I could post the phone number
if you like.
>
> Hope that helps
> Ed Gardels 89SP
> Arlington Tx. 6in rain last 36 hours
> i would appreciate the number
thanks bob maloney in ky where rain is just starting
>
> > I have a 87 FC 35 and the generator will not start from any starting
console. The generator is an Onan 8.0 diesel I took the starter off and had it
checked, checked out great. I put the starter back on and it still will not
start. I then short the solenoid wire to the battery and it would start if was
getting the signal from the console. I have since taken apart the console on
the generator itself to find the Ford style starter solenoid inside and checked
it out and it works fine. The ground side of the solenoid at this point seems
to be getting the wrong signal as it should be grounding and in fact has 12
volts to it. The switch side of the solenoid at this point has a little over 8
volts when the starter switch is activated. The generator attempts to start as
it should operating the fuel shutoff and finally for lack of a better word times
out and either trips the DC output control or the push to reset circuit breaker.
From this can someone either tell me what to look for or if at all possible
supply me with a schematic. Any help is greatly appreciated.
> > Thanks in advance,
> > Bob Maloney
> > Clay City KY
> >
>


87 FC 35 Generator?????? - sc310c - 09-25-2009 13:18

STILL WORKING ON GEN GOT SERVICE MANUAL CAN MANUALLY WORK FUEL SOLENOD WHEN
UNHOOKED AND ENGINE RUNS DOES ANYONE KNOW HOW MANY AMPS IT PULLS
TKS BOB IN KY STILL HUNTING


87 FC 35 Generator?????? - sc310c - 09-26-2009 00:05

--- In WanderlodgeForum@yahoogroups.com, "sc310c" <sc310c@...> wrote:
>
> STILL WORKING ON GEN GOT SERVICE MANUAL CAN MANUALLY WORK FUEL SOLENOD WHEN
UNHOOKED AND ENGINE RUNS DOES ANYONE KNOW HOW MANY AMPS IT PULLS
> TKS BOB IN KY STILL HUNTING
>
I need to know how many amps it takes to engage the fuel solenod
tks bob


87 FC 35 Generator?????? - Ralph Fullenwider - 09-26-2009 01:24

You need to measure the resistance of the coil of the fuel solenoid then
divide by the incoming voltage and that will equal the amperage. Look up
Ohm's Law on the net.

Safe travels,

Ralph & Charolette Fullenwider
'84 FC 35 "Ruff Diamond"
Duncan, Oklahoma

At 12:05 PM 9/26/2009 +0000, you wrote:
>--- In WanderlodgeForum@yahoogroups.com, "sc310c" <sc310c@...> wrote:
> >
> > STILL WORKING ON GEN GOT SERVICE MANUAL CAN MANUALLY WORK FUEL SOLENOD
> WHEN UNHOOKED AND ENGINE RUNS DOES ANYONE KNOW HOW MANY AMPS IT PULLS
> > TKS BOB IN KY STILL HUNTING
> >
>I need to know how many amps it takes to engage the fuel solenod
>tks bob
>
>